(there is no standard weight for LAB putters, all weights are fitted specific to customer, however an example set up for a DF3 35" putter is noted below for reference)

High quality aftermarket weight.

This weight compatible Lab Golf Model : 
OZ.1 Putter
OZ.1i Putter
DF2.1 Putter
DF3 Putter
MEZZ.1 Putter

An example wight set up for a DF3 putter; 4 x 2.5g rear weights, 2 x 8g weights closest to face, 2 x 18g outer most weights 

Package include: 1pcs Weights or 1pcs Wrench Tool.