Silverline 1/2" Drive Socket Extension Bar Set

1/4"", 3/8"" and 1/2"" square drive 3pce extension bar sets hardened, tempered, chrome plated and polished with knurled bands. Spring loaded ball bearing holds socket securely in place. 1/4"" contains 50, 75 and 150mm extension bars. 3/8"" contains 75, 125 and 250mm extension bars. 1/2"" contains 75, 125 and 250mm extension bars.