Heavy duty aluminium alloy. For use with minimum 12.7mm (1/2″) materials. Designed and optimised for indoor and outdoor projects. Double guides adjustable up to 80mm (3″) width. Provides stronger joints than standard. Includes mini jig, step drill, collar and key, square drive and starter kit. Heavy duty aluminium alloy. For use with minimum 12.7mm (1/2″) materials. Designed and optimised for indoor and outdoor projects. Double guides adjustable up to 80mm (3″) width. Provides stronger joints than standard. Includes mini jig, step drill, collar and key, square drive and starter kit.