This is a set of 8 blue-glowing lights (*^▽^*) These are battery-powered chemical light sticks that can be attached to the rod tip. They can be used repeatedly, making them cost-effective♪ (Batteries not included) Compatible batteries: BR435, BR425. I think they can be attached to most rods♪ Product Specifications: ・Length: Approximately 6.4cm ・Diameter: Approximately 6.5mm ・Recommended tip diameter: Approximately 1.5mm～3.3mm ・Batteries used: BR/CR425 BR/CR435 〜〜〜〜〜Other rod tip lights〜〜〜〜〜 Click here ↓↓↓ #竿先ライト伊豆おかっぱり (Rod Tip Lights Izu Okappari) 〜〜〜〜〜Lithium batteries〜〜〜〜〜 Click here ↓↓↓ #リチウム電池伊豆おかっぱり (Lithium Batteries Izu Okappari)