Surgi-Tip features unique four-sided, super sharp design for precise incision, faster healing and improved retention. 100% PureLaser permanent imprinting for rugged readability d for life of animal. Molded from advanced thermo polyurethane and acetyl nylon to withstand extreme heat, cold, ultra-violet light, moisture and mold. Pliable, yet durable to hang tough without snagging, cracking or breaking. 3W x 4-1 2H. Available in blue, chartreuse, green, orange, pink, purple, red, turquoise, white and yellow.