Sealey 10 piece security trx ts socket bit set 1 4 3 8 sq drive sealey premier ak6227 chrome vanadium steel sockets with s2 steel bits 5 spline security trx ts bits suitable for a range of automotive and electrical applications knurled ring on sockets to assist gripping with oily fingers supplied with socket rail sealey ak6227 security trx ts socket bit set 10pc 1 4 3 8 sq drive