Achieve professional results with these all-metal planking clamps, designed specifically for ship model building. The unique stepped design ensures your planks are held securely against the bulkhead, providing neater, tighter-fitting joints every time. Made with durable aluminum, the knurled finger grip makes tightening and loosening easy, even for intricate applications. The press-fit micro-size wood screw fits bulkheads as thin as 1/8", making these clamps versatile and reliable for a variety of model-building projects. Compact yet strong, these clamps are a must-have for any ship model enthusiast. The micro-size wood screw is press-fit into the finger grip and will hold in bulkheads as thin as 1/8". 1-1/4" long x 1/4" diameter.