"The Ultralight iron head is engineered with a wider sole and a lower center of gravity to help launch the ball into the air. The increased heel/ toe weighting produces more forgiveness on off-center shots. UL39 ・Optimal Height Range 39 in. to 42 in. ・WT-30u model (30% lighter club heads) ・38 degree loft ・K-Flex graphite shaft ・23 in. finished club length ・Appropriately sized grips (replacements available) UL42 ・Optimal Height Range 42 in. to 45 in. ・WT-25u model (25% lighter club heads) ・38 degree loft ・K-Flex graphite shaft ・25 in. finished club length ・Appropriately sized grips (replacements available) UL48 ・Optimal Height Range 48 in. to 51 in. ・WT-20u model (20% lighter club heads) ・33 degree loft ・K-Flex graphite shaft ・28.5 in. finished club length ・Appropriately sized grips (replacements available) UL51 ・Optimal Height Range 51 in. to 54 in. ・WT-20u model (20% lighter club heads) ・33 degree loft ・K-Flex graphite shaft ・30.5 in. finished club length ・Appropriately sized grips (replacements available) UL54 ・Optimal Height Range 54 in. to 57 in. ・WT-15u model (15% lighter club heads) ・30 degree loft ・K-Flex graphite shaft ・32 in. finished club length ・Appropriately sized grips (replacements available) UL57 ・Optimal Height Range 57 in. to 60 in. ・WT-15u model (15% lighter club heads) ・30 degree loft ・K-Flex graphite shaft ・34 in. finished club length ・Appropriately sized grips (replacements available) UL60 ・Optimal Height Range 60 in. to 63 in. ・WT-10u model (10% lighter club heads) ・36 degree loft ・K-Flex graphite shaft ・34 in. finished club length ・Appropriately sized grips (replacements available)"