The Really Nice Tamper is just what the name implies. No batteries, no apps, no fluff – just a well-made, fully mechanical self-leveling tamper with silky smooth and precise action. Available in silver and onyx; both are the same premium anodized finishes utilized in many of our other accessories. Optimized for use with the Unifilter and Unibaskets – compatible with any 58mm basket. A 9kg spring is pre-installed, but an easily-swappable 12kg spring is also included for those wanting a little more oomph. The Really Nice Tamper is machined from solid aluminum, stainless steel, and brass. Included in package One Really Nice Tamper One Tamper Stand One 9kg spring pre-installed One 12kg spring – can be installed for higher tamp force Compatibility The tamper base is machined to 58.55mm OD. The precision fit is compatible with most any 58mm basket, fancy or traditional.