Universal White Cement™ Finest Finish Blends® FFMBW-80 80 lb White Island Series™ Pre-Blended Pool Finish, Marble Plaster. Universal White Cement® has developed the superior products known as Finest Finish Blends® and Universal Mini Pebble™ Interior pool finishes which continue to be the choice of the industry’s best applicators and pool builders. The natural pebble aggregates used in our products are delicately smoothed by nature along beaches, in rivers and in mines, for example. This gives their surface a textured finish that is non-abrasive and very pleasing to the touch.