Progressive Component Top Lock set of two. These are needle bearing top locks from Progressive Components. Made of D-2 tool steel hardened to HRC 56-58 and they have the black oxide coating. Measurements are t=1.125, w=1.9995, a=1.375. The number is TLR112 x 200. Two sets. Lists for 7.00 per set. Selling both seto for 5.00. Free shipping within continental US.