ToolUSA 7 Inch Stainless Steel Wartenberg Pinwheel: S8095-PK This Tool Is 7 Inches Long Overall, And The Rotating Head Is 1-1/4 Inch In Diameter This Pinwheel Is Made Of High Quality Stainless Steel, And Will Not Rust Or Corrode Use With Wax Or Clay, It Rinses Clean Easily- Can Also Be Placed In Boiling Water To Sterilize Used In Neurological Studies As A Way To Test Sensitivity And Feeling On The Skin You Can Use It With Fabric Or Leather Crafting To Make Starter Holes For Stitching