Manufactured from hardened and tempered Chrome Vanadium steel with an electrodeposition finish. Ultra-smooth, flip reverse double end ratchet spanner combining go-through socket and 1/4"Hex drive. Go-through sockets for use on fixings with extended studs and adjusting screw locknuts. Lock-on™ sockets enable use on up to 85% rounded fasteners. Low profile sockets and bits, ideal for limited access applications. Supplied in storage case.