Features and Benefits:?Precision-machined steel construction for accuracy and durability universal, lock-nut design fits Milwaukee and most popular routers 9/32 in. inner diameter, 3/8 in. outer diameter, 5/16 in. barrel length includes one lock-nut?Includes one lock-nut?Router accessories?No warrantyMilwaukee's template guides are precisely constructed from machined, rust-resistant steel for years of accurate, reliable operation. The industry standard, lock-nut design fits Milwaukee routers as well as most popular routers equipped with a 1-3/16 in. center hole sub-base. Includes one 1/2 in. dovetail and general routing template guide and one 44-40-0170 lock nut.