Keep your Makita 21° full Round Head 3-1/2” framing nailer (AN924, sold separately) nearby with the comprehensive replacement Kit. The hook assembly kit (HY00000958) contains the parts needed for replacing the hook, including the hook and fastener. Each part is made of high quality materials for long lasting performance. The AN924 is engineered for a range of applications including framing walls, floors and roofs, as well as construction of roof and floor decking, floor and wall sheathing/Siding, and sub-flooring.