Break-off screw 8-32 x 1 /34" zinc plated. Break-off points 1", 1 1/4", and 1 1/2".

Perfect solution when your not quite sure which screw length you require.

Simply grip the section below the break point you choose with a pair of pliers, and break off.

Do not grip threaded section you want to use with pliers as this would damage the threads.