Product Calculator How many Form-A-Tread® Kits will you need for your installation? Length of each Step (inches)*Total Number of Steps*Number of Treads per Step*Width of Treads*0.5" Wide Tread1.0" Wide TreadNumber of 400ml Kits Needed.5" Wide TreadsNumber of 400ml Kits Needed1" Wide TreadsBuy 400ml Kits NowBuy 400ml Kits Now