All machined in the U.S.A tips! Provides you with 4 tips for many options and designs. Includes the following: OTD 20 LPI Waffle Tip - The most versatile tip on the available. Provides light to heavy textures, in multiple designs. OTD Rectangle Tip - provides a brick, 'tree bark' and checker board texture. Small Round Tip -Slightly tapered, this tip melts in an easy to control manner, and provides a (1/16") dot pattern. Large Round Tip - Slightly tapered, as the Small Round, but provides a roughly 1/8" dot pattern. These tips are replacement tips for and are duplicates of tips found in the Oregon Trail Defense Firearms Sti Mfg: Oregon Trail Defense