Check the listing for details. 13Pcs Dental Orthodontic Mini Implants Micro Screw Self Drilling+1Pc Screwdriver. Condition: New. Listed at 46.07 USD. Dental Orthodontic Mini Implants Micro Screw Self Drilling Screwdriver set Pack:13Pcs Mini Implants(1 of each size)+1Pc Screwdriver ScrewdriverColor :Blue,Black,Fuschia(Default Blue, please leave a message if you need other colors) Screw Material:Titanium Alloy Diameter:1.4mm,1.6mm,1.8mm,2.0mm Length:6mm,8mm,10mm,12mm Available Size: 1.4mm*6mm,1.4mm*8mm,1.4mm*10mm 1.6mm*6mm,1.6mm*8mm,1.6mm*10mm,1.6mm*12mm 1.8mm*8mm,1.8mm*10mm,1.8mm*12mm 2.0mm*6mm,2.0mm*8mm,2.0mm*10mm Used For Anchorage Device System Feature: A hole(0.8mm) for orthodontic wire Greater control of tooth movement Increased patient comfort Decreased reliance on patient compliance Anchors are self-tapping, allowing for easy placement and removal chairside Anchors have a multi-functional top offering maximum versatility and performance Anchors are available in multiple lengths