Mobile home and RV anchor sets in a wet cement slab. Â Use anchor in conjunction with slotted bolts (part # 2010) and straps (part # 2694 and 2680) Â which are sold separately. Â The head of each anchor accepts 2 bolts for two straps. Generally one strap leads to the frame, the other over the home or camper. Â Head of anchor should set as close to the top of the cement as possible. Â Rod below the head measures 8" with a 3" hook. Â