We can make this collar to fit dogs with neck size 18 inch and up to 27 inch (45 cm - 70 cm) This Collar Is Extra Wide - Almost 1 3/4 Inch - Which Makes It Perfect Tool For Handling Large And Active Breeds This Leather Collar Is Made With Symmetrical Proportional Vintage Look Rusted Nickle Large Plates!!!That Help Bring Out The Beauty Of This Hand Crafted Creation. We Used Only Vintage Rusted Nickle Plated Hardware. Available In Brown, Black and Tan (natural) Very Strong and Thick Perfectly Oiled and Selected Leather This collar is made of very strong, durable and soft, solid leather. No doubled up fillers or machine stitches...which means the edges won't fray! "Functionally fashionable". Plates are hand set with 2 brass rivets. Hand set brass rivets secure the stainless steel buckle and D-ring (for tags and leash.)