Kool Stop BMX Brake Pads/Shoes - Threaded - White - USA Made 16t If you do not know

If you do not know what OS-20 is

Material Arms: 6061-T6 AluminumFittings: Titanium HardwareAdjustment: 35mm of vertical brake pad adjustment: Weight: 198 grams / 7 ounces: Arm length: 108mm (Pro size) Color: Red w/ Laser-etched graphics

This is the protite belted

The VP 1" threaded BMX headset will fit most any old school BMX frames

Kool Stop BMX Brake Pads/Shoes - Threaded - White - USA Made 16t If you do not knowThe BMX Pad is a top choice for BMX bikes direct pull brakes. The curved design allows this longer more rigid pad to contour the rim for better brake performance. Hardened and Plated reinforced steel backbone Patented Angled tip plow Water grooves Knurl lock washer system Available only in Threaded Weight per pair: 61. 7 grams Overall length: 78. 5 mm Pad contact width: 8. 5 mm Color: White