Product Description This listing is for spare pins only. You will receive 10 stainless steel pins with a storage tube. No distribution tool is included. All pins are custom-made from stainless steel and feature a dulled, flat tip designed to work with ARO distribution tools. See compatibility information below. Pin Diameters 0.35mm Diameter: Stiffer and more durable pins designed to efficiently break up dense clumps without pushing grounds around. Best for grinders that produce heavier clumping. 0.25mm Diameter: Thinner and more delicate pins ideal for slicing through clumps and fine fluffing. Best suited for high-end grinders with more uniform grind output. Thinner and more fragile. Compatibility Tool Pin Length Compatible Diameters ARO Orbit ECO™ 55mm 0.25mm or 0.35mm* ARO Orbit PRO™ 55mm 0.25mm or 0.35mm* ARO Orbit PRO™ – PortaStack Edition 67mm 0.25mm or 0.35mm* ARO® Manual WDT Tools (v1 and v2) 87mm 0.25mm or 0.35mm *Pin Fit Note: 0.35mm pins have a tighter press fit in plastic gear Orbit tools and may require pliers for installation. Silicone and metal gear versions use flexible silicone pin holes and all pin diameters can easily be installed by hand. If you are unsure which length or diameter you need, please contact us before ordering.