ProBasics 5 Fixed Wheels w Glide Caps Pair Cushions Air 5 Seat To Floor Height Furnishing Accessories 5 Seat To Floor Height 19 Baseline© Fold Up Monofilament Evaluator Hand Set of 5 with Case * The Baseline© Fold Up Monofilament evaluator is used to measure cutaneous sensory perception threshold * The monofilament test provides a non invasive evaluation with objective and repeatable results * Each monofilament represents a unique amount of force which is marked by force and size * These monofilaments feature an easy to fold nylon filament for protection as well as easy storage and portability * This 5 piece hand set includes 2 ProBasics 5 Fixed Walker Wheels with Glide Caps (Pair) * 5 universal wheels with glide caps