Angle entry for 25 degree: Easy access to insert and remove screw, precisely machined tip funnels itself into screw head. Unique rotated and practical function. Drive your wrench out with an easy rotation & blocking device in the holder for keeping wrench in Integration of ergonomic double-layer holder. Holder marking for an easy identification of the dimensions. Dedicated key space for instant selection and storage. 1.5-2-2.5-3-4-4.5-5-5.5-6-7-8-10MM