Specification Brand : Fafeicy BulletPoint1 : We strive to provide a product of the highest quality and the best customer experience, if you are not completely satisfied, do not hesitate to us at any time. BulletPoint2 : Adjustable Wing Divider can be used to draw lines from edges, draw arcs, locate, etc, wide range of uses. BulletPoint3 : Simple Structure: The structure of spacing guage is classic, simple and easy to operate; Even novices can master skills quickly; Note: the top screw is movable and may loose during transportation; You can tighten or loosen it by yourself. BulletPoint4 : Optional Size - 4in/6in/8in three different size for choosing, convenient to complete the work more efficiently and conveniently during use. BulletPoint5 : With 4in/6in/8in different size specifications, convenient to complete the work more efficiently and conveniently during use.. ItemName : Drawing Tool, Adjustable Wing Divider Carbon Steel Woodworking for Geometry, Drawing, Drafting, Socket Wrenches (6) ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 20 centimeters ItemPackageDimensions_Width : 4 centimeters ItemTypeKeyword : joint-calipers-and-dividers Manufacturer : Fafeicy ModelNumber : Fafeicywmfkcxnpz1-12 PartNumber : Fafeicywmfkcxnpz1-12 ProductDescription : Specification: Item Type: Spacing Gauge Material: Carbon steel, brass Purpose: Draw a line from the edge, draw an arc, position, etc. Specifications Thickness(approx.) Maximum radius(approx.) 4in 2.2mm / 0.1in 115mm / 4.5in 6in 2.2mm / 0.1in 137mm / 5.4in 8in 2.2mm / 0.1in 207mm / 8.1in