Home Sewing Depot Roman Shade Cord Locks-3 Slots-Max 6 Cords Heavy Duty Professional Cord Locks Maximum number of 6 cords, maximum shade lifting weight is 20 lbs Cordlock is 3/4 inch wide x 2 3/4 inch long x 2" drop Easy to use for DIY projects. Can be used with 1.4mm and 1.8mm cord