Hikers and walkers, these Mons Peak IX rubber tips are absolute must-haves for protecting your trekking poles and improving traction on different surfaces! The 4-pack gives you plenty for multiple poles or to share with hiking buddies. They feature a universal fit with a taper hole of 10-10.9mm (0.39-0.43 inches), making them compatible with pretty much all brands of Nordic walking poles, trekking poles, and hiking sticks. Made from tough TPR polymers with deep tread soles, they provide excellent grip on pavement, trails, beaches, and even indoors. The internal metal washer is a genius feature - it prevents your carbide tips from puncturing through the rubber, significantly extending the life of these tip protectors. Each tip weighs only 33 grams (1.1 oz) with dimensions of 50x40x20mm, so they're lightweight and compact enough to carry as spares in your pack. The wear rate obviously depends on the terrain - rougher surfaces will wear them down faster, but the quality is solid enough to last through considerable use. Mons Peak IX is a reputable outdoor gear company, and you can tell they've put thought into the design and materials. Whether you're power walking in the neighborhood, hiking backcountry trails, or using poles for fitness training, these rubber tips protect both your poles and the surfaces you're walking on. They're especially great for preventing that annoying metal-on-pavement sound and protecting indoor floors. The 4-pack is such smart value - you can keep a pair as spares and still have another pair to use or share. If you want to extend the life of your poles and improve your walking experience across different terrains, these rubber tips deliver exactly what you need!