Usage Tips:High Quality MaterialOur threaded spindle rods with steel core screw ABS plastic, durable and reusable.Solid material that wont crack with pressure, help to make the banister gate fit snug and sturdy, so as to ensure safety of the kids or pets. Safety and StabilityThis pressure screw makes your baby door more stable and will not malfunction. A good way to protect walls or stair rails, the rubber ends protect your stairs from scratches.(Do not use it at the top of the stairs) Easy to InstallOur threaded spindle rods with adjustable lenth bolts, No tools needed,do not make a hole in the wall.These spindle rods work just as well as the factory bolts.Just rotate the nut and create reverse force against wall, quick and easyto fit. Wide ApplicationFit for all pressure gates, baby gates, pet gates, walk through extra wide, tall gate, safety children proof gates with door.Fit for all pressure mounted baby gates or pet gates.4 pack threaded spindle rods replacement, bring your oldgate back into use,save you from buying a gate. Package Included4 pack threaded Spindle Rods in the package.Size:diameter M10 (10mm), length 80mm ,top diameter 35mm(1.38 in),only fit for M10 spindle hole. Not for 8mm screws. Colour:White Feature: 1. This gate adaptor is quick and easy to fit requiring no tools. 2. Please make sure the hole of your Baby Gate can insert M10(10mm) bolts before you purchase. 3. protect your wall, door, stair,banister from being damage by pressure gates or dog gates. 4. Rubber ends to protect your staircase from being scratched, Makes it possible to mount a Baby safety gate on stairs up against a baluster, round pole. Specifications: Product name:Threaded Spindle Rods Color:White Material:Steel core screw+ABS plastic Size: M10*8cm Packing Includes: 4 pcs Threaded spindle rods Installation Method: 1,the adjustment wheels along the threading to make it into a right situation,eliminating the gap between the adjustmet wheel and the rubber foot. 2,Insert all 4 threaded spindle rods into the holes at each of the 4 corners of your Baby Gate. 3,Position the gate and make sure it is level and centered within your doorway or opening and then rotate the adjustment wheels which on the threaded spindle rods to make it into a right situation. Warm Tips: Please make sure the hole of your Baby Gate can insert M10(10mm) bolts before you purchase.