Iron Core Athletics Wall Mount Pull Up Bar - Heavy Duty Wall Mounted Pull-Up / Chin Up Bar - Four Mounting Bolts on Each Side for Secure Mounting Strength Heavy duty wall mount pull up bar with padded hand grips in three different positions Includes Pull Up Bar, all mounting hardware and installation instructions Heavy duty construction and built to last with re-enforced Poly Coated Steel and Extra Strong Mounting Brackets each with Four Mounting Holes Three different pairs of dense foam handles allowing for wide, medium, and narrow grip locations Mounting Hardware is for Concrete or Block Walls as well as hardware for mounting to Wood Beams are included. Note this is an industrial strength product with Eight Mounting Holes similar to the one seen in gyms and Crossfit boxes. This unit is not to be confused with competitive products targeted at Mounting on adjacent 16" spaced studs which only have two mounting holes per side..