Metric Allen Key Sets

Most metric Allen key sets jump from 3mm to 4mm to 5mm. Every HemBorta metric set includes the 3.5mm, 4.5mm and 5.5mm half sizes in between - the sizes that stop a job dead when the screw does not match the set. Thirteen keys from 1.27mm to 10mm, ball ends for angled access, chamfered tips for clean engagement, heat treated chrome vanadium steel throughout.

Choosing comes down to arm length and finish. Short arms (40-112mm) work where a long key will not swing - against walls, inside cabinets, in a bike bag. Long arms are the everyday choice, in black oxide sealed under clear gloss enamel or rust resistant satin for damp sheds and hard use. Extra long arms (up to 222mm) reach deep recessed bolts no standard key can touch. The 26 piece set adds the full imperial range alongside, and the folding sets put the everyday sizes in your pocket.

All sets are available to buy on Amazon - each product page links straight to the listing for your marketplace.