Battim Ois L’yisroel are high quality gassos tefillin battim. A set includes shel yad, shel rosh and protective storage boxes. Gassos battim are the preferred battim for tefillin because of their strength, quality, and strict adherence to halacha. Why are my least expensive battim more expensive than some online seller’s most expensive battim? It’s true that gassos tefillin battim are available for less than $475 but I have seen frequent problems with less expensive battim and decided not to sell them. The most common problem is that they do not maintain their squareness which is extremely problematic in halacha. Poorly made, weak battim often lose their squareness when the bottom of the battim warp, which in turn exerts uneven pressure on the top of the battim and causes them to become rectangular. This happens when the battim are constructed from low quality leather, and when the process of drying the hides is done too quickly. I have also seen battim that had walls that were so thin that they were almost see thru, which defeats the point of buying expensive gassos tefillin battim in the first place. After all, gassos means thick; gassos battim were designed to be strong, not just look like they are strong! I have also opened up cheap gassos battim and found holes in the various internal walls. Sometimes battim with holes on the inside can still be kosher but since there are many configurations of holes that create real problems in halacha, it’s not worth taking the chance on cheaper battim that may not even be kosher let alone sturdy enough to last a lifetimeHashgacha / Rabbinical SupervisionTefillin battim need hashgacha to insure that that are manufactured according to halacha. There are many steps in the process of making tefillin battim and each step has its own particular pitfalls. The Rav Hamachshir, Hagon, Reb Moshe Shaul Klein has been supervising battim making and other aspects of tefillin manufacturing for many years. He is a dayan in the Bais Din Hora’ah of Zichron Meir, and his hashgacha is why I trust in the kashrus of these battim. What’s included?When you purchase a set of battim (as opposed to a whole tefillin set) you get a shel yad bayis, a shel rosh bayis and protective storage boxes. Parshios are not included. This listing is for battim by themselves. Check out the Complete Tefillin Sets section for ready to purchase tefillin sets that already have all of the necessary components. Check out the extensive Parshios section for lots of parshios options. How do I take care of tefillin battim? Without a doubt, the most important part of tefillin care is keeping them dry. Don’t wear tefillin if your hair is wet. If the battim get any moisture on them let them dry out with the bottoms facing up for many hours before putting them back in their protective plastic boxes. When you put on and take off your tefillin, stand over a table so that if they drop, they will land on the table. This will keep any damage to a minimum. Put your tefillin back into their protective plastic boxes very gently. Don’t bang the corners of the tefillin on the plastic boxes.
Battim Ois L’Yisroel
The process of squaring the battim is powered by battim macher himself as he peddles the machine. No electric machines are used in the squaring. The holes for the stitching is very precise. The entire process of making the battim is done by hand, with specific intention that the tefillin attain the required level of kedusha. The master craftsmen who create these tefillin conduct themselves in the mannor of G-d fearing Jews. There are no holes in the battim whatsoever. The shin is made entirely by hand. The battim are completely separated and no glue is used in between the four compartments. The stitching that goes through each of the four compartments is visible from the outside. A square window of leather is used in the battim to add strength.
Size: These battim range in size from 32 to 35 millimeters. The majority are either 33 or 34 millimeters. Smaller sizes are available upon request. The size is for the top portion of the battim.
The total length of the battim is typically in the 66 to 69 millimeter range.