Features: This multi-functional wrench is widely applicable for facility installations, such as the installation of piping, air conditioning, and electrical conduit support fittings. It is suitable for rack installations with a 14mm socket. The double socket specification of 10mm & 14mm allows the use of the 14mm socket by sliding the 10mm inner socket inward. The notched section of the 13mm socket allows for turning butterfly screws. It has a hole for attaching a fall prevention cord. The 72-tooth gear provides fine movements and is effective in confined spaces. Applications: For tightening and loosening bolts and nuts used in general electrical and air conditioning facility installations. Compatible Sizes: 8, 10, 12, 13, 14mm, butterfly screws Gear Count: 72 (teeth)