EVA FOAM MATERIAL: Made of high density EVA foam material, extrusion resistance, crash resistance and light weight . SLIDER BOBBERS: The smooth metal holes help the line fly quickly without getting stuck, allowing your bait to land smoothly in front of big fish. HIGH-VISABILITY :High-visibility color, you will not miss the signals once the fish takes a bite, even if in a wind day. EASY TO USE : The slider float is easy to install and great for new anglers.Just thread the float stopper and fishing beads onto the line in sequence, then thread the slip float up the line. Ideal for long cast, good for fishing large size fish at sea ,lake and river. 4 buoyancy options and 5 kits Available: 6 pcs-15g (0.5 oz), 6 pcs-30g(1 oz), 3pcs-15g(0.5 oz)+3pcs-30g(1 oz), 4pcs-50g(1.8 oz), 4pcs-80g(2.8oz). 4 buoyancy options and 5 kits Available: 6 pcs-15g (0.5 oz) 6 pcs-30g(1 oz) 3pcs-15g(0.5 oz)+3pcs-30g(1 oz) 4pcs-50g(1.8 oz) 4pcs-80g(2.8oz).