【Luggage Wheels Replacement Contents】: 4*luggage casters (wheel diameter 40mm);10* bolts (axle 30mm*4 & 35mm *4-Single-wheel installation; axle 60mm*2-Dual Luggage installation);5*non-slip screws (includes 1 extra for backup); 8* washers.4*4mm axle spacers + 2* 13mm axle spacers(Note: use axle spacers for Ø8mm shafts.); 2* hex keys; 1* Instruction Manual. 【Suitcase Wheels Dimensions & Material】:Caster wheel outer diameter: 40mm; wheels width: 18mm (21mm Including Bearings);Central axle hole diameter: 6mm. PU rubber injection process, silent, highly elastic, strong load-bearing capacity, suitable for various complex road surfaces. The Bearing hardness is 82-85A, with 2 built-in balls for smoother rolling and greater durability and wear resistance. 【Single & Dual Wheels Repair】: Smooth rolling elastic mute bearings wheels-Inline skating roller level 82-85A Hardness PU Rubber Perfusion Built in 2 Ball Bearings,strong load-bearing,sturdy and wear resistant. Suitable for single luggage wheels and dual luggage wheels installation.For Single Wheels,Wheel-housing Inner Width(W) 13/16in(21mm)≤W≤1 4/16in(32mm); For Dual Wheels,Wheel and Slot Shaft Total Width(W) 1 10/16in(42mm)≤W≤2 6/16in(60mm). 【Wide Compatibility, Easy Replacement】: Suitable for replacing damaged wheels on most luggage, trolleys, pull bags, and suitcases. Works on various road surfaces like hotels and airports! If the wheels on your favorite suitcase or luggage are worn or damaged, this wheel repair kit allows for simple replacement. Beginners can also install it easily to replace worn casters. 【Notes and Warranty】1. Verify size before purchase, as this product is not universal.2. Use washers to fill gaps and prevent axle loosening or wheel cover displacement. 3.Ensure wheel rotates freely before final wrench tightening. Avoid over-tightening and then loosening, as excessive torque can expand the screw hole, complicating future disassembly. 4.30-day warranty from purchase date.Non-human-caused defects qualify for returns or free exchanges as requested. 【Notes and Warranty】

1. Verify size before purchase, as this product is not universal.
2. Use washers to fill gaps and prevent axle loosening or wheel cover displacement.
3. Ensure wheel rotates freely before final wrench tightening. Avoid over-tightening and then loosening, as excessive torque can expand the screw hole, complicating future disassembly.
4.30-day warranty from purchase date. Non-human-caused defects qualify for returns or free exchanges as requested.