BONDHUS PHX5-6 ProHold InHex Bits 5pcs Imperial Set 5/16"-5/8", 33645 - ProHold® Socket Hex Bit 5 pc Tool Set w/o Sockets 6" Length. Includes sizes: 5/16", 3/8", 1/2", 9/16" & 5/8". With ProHold® Button Technology. Protanium® High Torque Steel and ProGuard™ corrosion resistant finish |