Prest-On Insta-back 1/2 Inch Drywall Fastner Clip Plumbers DIY 50 Pack with 100 Screws Instaback Save time & money Approved for use of wood & steel studs ICC ESR-1812 Code Compliant Fastners meet the wind and seismic force values noted in 25-I, ICBO Fire Resistance Rated by UL