Our wood rail panels are sold in sets of three or individualls for long panels and attach to your M-LOK or KEYMOD rail with stainless steel hardware. Each rail panel covers 2.5 MLOK slots and is 4 inches in length, 5/8 of an inch wide and 7/32 inch thick. This standard sizing allows maximum versatility so you can attach each panel on your rail in the way that best fits your grip and works with your other attachments.