We produce different sizes and different shapes of tungsten carbide pins, studs, nails for the tyre stud, spike, shoes, horses,buses, trucks, etc. 1. Type: threaded ball studs, Flat studs,screw tire studs 2. Apply for: all kinds of cars, such as truck, racing car, general car, bicycle, alpenstock 3. Advantage: -- pure raw material -- easily installed&removed -- recycling use -- sizes & types are available -- good wear resistance -- strict tolerance controlled -- virgin raw material -- zinc plated for rust protection -- directly factory sale with good price -- short and on time delivery -- all the specifications can be used in cars -- samples will be given upon the inquiry All factors of the list are absolutely important on the winter tire studs, but it is not essential. Professional manufacture for snow studs, tyre studded scews, antiskid boots nails: New type snow screw car tire studded pin, easy to install and remove without assembling tools. using in different season, after winter weather can take them off for next turning. Choosing the screw studs only to based on depth of your tire thread.