Hot Tub & Spa Cover Strap Buckle Replacements If the buckle breaks off your cover strap how do you sew on a new one? You don't! Simply add the strap adaptor. A handy stainless steel quick link allows instant attachment to the existing strap. Complete with a locking push release male and female buckle to fix any problem. 2 keys included. Note: Because this item includes the entire buckle mechanism, you no longer have to designate between push and pinch release buckle styles. Keys provided work on both the pinch and push locks. View our huge range of spare parts here.