total 12pcs spikes in front part of the grabber--cross spiral wire at the back side--provides dual traction than regular snow grabbers Double Traction Snow Grabbers JH-209Click here for details. Specifications: Material: Thermoplastic Elastomer (TPE) Size: M: USA: 4-7 EUR: 35-39 JAP: 22-25cm L: USA: 8-11 EUR: 39-46 JAP: 26-29cm XL: USA: 11-14 EUR: 45-48 JAP: 29-32cm Packing: Blister Card; 100pairs / CTN Cubic: 2.47' / 2.47' / 4.8' Weight: N.W.: 12.5kgs / 14.5kgs / 18.0kgs G.W.: 13.5kgs / 15.5kgs / 20.0kgs Cold-Resistant: -40C Certificate: ISO9001/2000