Designed for removing and replacing shock absorbers, allows the removal of the top suspension nut by holding the strut piston so it doesn’t rotate while turning the nut Strut Nut Socket 21mm US PRO Tools 18pc Shock Absorber Strut Nut Go-thru Socket Set 1/2 Inch Drive Strut Tool The go-through design of the socket and ratchet allows the extension to pass through the middle. To be used in conjunction with a 1/2 Sq drive ratchet or T-bar. 1 x Go-Thru 21 mm ratchet. Designed for removing and replacing shock absorbers, allows the removal of the top suspension nut by holding the strut piston so it doesn't rotate while turning the nut The go-through design of the socket and ratchet allows the extension to pass through the middle. 1/2 Drive Deep Strut Socket for Unistrut Type Channel Bolt Fixings – AB Tools Online To be used in conjunction with a 1/2 Sq drive ratchet or T-bar.