| 摘要 |
<p>A direct drill point comprising an internal chamber adapted to receive an adaptor for location of the direct drill point thereon wherein, the internal chamber is defined by at least one wall which ends in a region presenting an 5 angle of less than 90 degrees to that wall, an adaptor with an external surface complimentary to the internal chamber and a direct drill point assembly comprising the direct drill point and adaptor. LC) LO I(n</p> |
