5piece Rubber Mandrel Kit — 1/8' (3.17 mm) shank, compatible with most rotary tools for shaping and holding sanding drums on soft woods, hardwoods, and fiberglass. Key benefits Secure grip and better control: rubber antiskid heads hold drum sandpaper firmly to reduce slippage during detailed contouring, grinding, and finishing tasks. Flexible sizing: three head diameters (12.7 mm, 9.5 mm, 6.35 mm) cover common drum sandpaper sizes so you can switch between coarse shaping and fine finishing without changing tools. Reliable rotation and durability: metal shank and body combined with rubber heads deliver stable rotation and longlasting performance under continuous use. Wide compatibility: 1/8' (3.17 mm) shank fits most rotary tools, making the kit useful in home workshops and professional studios. Specifications Kit quantity: 5 pieces Shank diameter: 1/8 inch (3.17 mm) Head diameters included: 12.7 mm, 9.5 mm, 6.35 mm Materials: rubber heads with metal shanks Practical applications Woodworking: shape and finish trim, contours, and carved details on softwoods and hardwoods with precise, slipresistant sanding. Fiberglass : hold sanding drums steady while smoothing seams, fairing edges, or preparing surfaces for filler and paint. Model making and smallscale finishing: perform controlled contouring and polishing on furniture details, props, or studio pieces where consistent rotation and grip matter. Suitable for DIYers, woodworkers, auto/fiberglass technicians, and studio professionals who need a simple, durable mandrel solution for sanding drum work.