"Includes sizes: 3mm, 4mm, 5mm and 6mm in 1/4\" square drive; and 7mm, 8mm, 9mm and 10mm in 3/8\" drive","Chrome plated sockets","Tool steel bits","Extra short stubby for working in close quarters","Includes sizes: 3mm - 10mm","Intended for hand use only, do not use with impact wrenches or other power equipment","Set comes on socket rail 8 PIECE 1/4" AND 3/8" DRIVE METRIC STUBBY HEX SOCKET DRIVER SET SABXYSM8R | Matco Tools