The Lloyds Maredo PuT-23 Reciprocating Corer can be equipped with hollow tines up to a core size of 10mm (3/8") standard 6mm (1/4”) or optional 5mm (3/16") solid needle tines. The maximum working depth is 50mm (2”). Depending on ground speed, it can create up to 1,300 holes per sq.metre  (1,050 holes per sq.yard)