The brake adjusting pin shown here is used on the model B and 50 tractors. It is shorter length than the other pin, GP-A134R. These are made of hardened Stainless Steel. This imparts toughness and good wear life. Usual failure of the pins, are seizing in the brake housing or broken "ears", which impinge on the brake shoe, Usually when that happens there are other issues within the component parts of the brake assembly causing this.These pins now complement our stainless steel GP-B228RSS springs, also stainless steel. We have replacements for other brake parts as well.