The PACKOUT 4 in. Straight Hook features an innovative locking mechanism that provides the most secure mounting in the shop and garage. The PACKOUT 4 in. Straight Hook is constructed with a Reinforced Hook that maintains shape with repeated use overtime. Connectivity with 55+ PACKOUT Solutions enables you to fully customize your shop. This 4 in. Straight Hook is optimized to store Power Tools, Hand Tools, And More. This hook features protective rubber grips that prevent tools from slipping. Milwaukee PACKOUT is the industry's most versatile and durable modular storage system. Size: small. Color: Red. Material: Acrylonitrile Butadiene Styrene (ABS).