Steampunk Watch pieces and parts Clock gears - 5 extra Large Silver Steel Gears Cogs Wheels 33mm 5 extra large Silver steel gears for your crafting pleasure! These large pieces are great for jewelry, goggles, costume decoration etc. You can really make a statement with these These gears are almost 1.5" (33mm) in diameter. please look at the picture with the ruler so you are sure of the scale.