Sealey 7 piece security trx star security trx ts screwdriver set sealey premier ak4928 manufactured from chrome vanadium s2 steel seven 300mm double end interchangeable bits one end security trx star the other 5 sided security trx ts covers sizes t10h ts10h to t40h ts40h comfortable high grip textured handle suitable for a range of automotive and electronic applications supplied in storage case sealey ak4928 security trx star security trx ts screwdriver set 7pc 14 in 1