Optimum Opti drill B 24H Operating Manual page 48

OPTIMUM
M A S C H I N E N - G E R M A N Y
INFORMATION
The smaller the bit the more easily it may break.
In the case of deep drilling, remove the bit from time to time to remove filings from the drill. Add
a few drops of oil to reduce friction and prolong the service life of the bit.
GB B24H | B24HV | B28H | B28HV Operation
Page 48 Original operating instructions Version 2.2.2 dated 2014-03-07