Can also be used with the included standard risers and XL risers to fix to dog holes or to allow space for a router bit or jigsaw blade beneath the workpiece. The base of the bench cookie is made of wood. To keep costs low, you can even use a piece of scrap wood for this. All you need for this is a material that can ensure the anti-slip, glue to fix everything together. Includes 8 x Bench Cookie® Plus Work Grippers, 4 x risers, 8 x extra-long risers and 8 x Bench Cookie® finishing cones. Complete kit for gripping and protecting workpieces. Use Bench Cookie® Plus Work Grippers alone to grip and protect workpieces. Can also be used with the included standard risers and XL risers to fix to dog holes or to allow space for a router bit or jigsaw blade beneath the workpiece. Includes 8 x Bench Cookie® Plus Work Grippers, 4 x risers, 8 x extra-long risers and 8 x Bench Cookie® finishing cones. Designed to fit 19mm holes.