The shape makes these very durable, in fact they rarely ping off the line at all! Super soft and line-friendly, there are a wide mixture of sizes.
Can even be placed onto the thickest of lines and they can be moved easily without damage.
Features

Handy dispenser
Central, deep-cut shot
Made from lead
Sits neatly on your line
Very durable, due to the cube shape
Super compact

Available in either of the following options:

No.8 0.06g
No.9 0.05g
No.10 0.04g
No.11 0.03g
No.12 0.02g
No.13 0.01g