Replacement metal spike pins for track and field spikes, with spike handles and for use with Lance Spark®. The pins are 12mm in size and come in a pack of 4. These were used by a child, but I am listing them in case someone can use them. I will give them to you. Thank you. - Brand: asics - Model Number: TTP975 - Size: 12mm - Quantity: 4 pieces - Material: Metal (iron) Thank you for looking.