Twister Square Nut Driver Armeg TWGBSND Nut Driver for fastening sheet metal screws and square nuts / bolts, etc. For 11mm square nuts Perfectly complements our 50mm & 100mm Twister Impact Magnetic Roofing Bolt Drivers armeg.com/products/twister-roofing-bolt-driver/ Features a 1/4” quick-change shank Impact rated for use with impact drivers Made in Sheffield, England from a high quality alloy for durability and strength in high torque applications Bored to to accommodate extruding bolt threads Experience efficient and secure fastening with the Armeg TWGBSND Square Nut driver. Made in Sheffield, England for high torque applications, this driver features a 1/4" quick-change shank and is impact rated for use with impact drivers. Complements roofing bolt drivers for 11mm square nuts. . Brand Armeg Diameter 14mm Dimensions (L)50 mm x (Dia)14 mm Guarantee 1 Year Length 76mm Magnetic Tip No Packaging Types Each Product Range Twister