Check the listing for details. Rotary Works Slimline Pen Machine. Color: Black, Condition: New. Listed at 280.00 USD. Rotary Works Slimline Pen Machine. The Slimline Pen, an Ali machine made for Lining and packing tattooing. Nicely balanced ready to connected to RCA cable or battery pack (which we sell separately on the site). Will run any size cart mags. - The shape is more scaled down and slimline as the name suggests and uses a cam wheel bearing rather than the other direct drive system we use in the other pens. - 10cm long and 2.5cm wide. - Great for solid colour packing line work.- Can be run slow or fast. - Weight: 4.3(123g) - 3.2mm stroke so great for smaller middle liners (single-14 round and 5 mag+) - Custom 12v motor and RCA ONLY. - Optimal running voltage 6.5-10v. (Start up will require minimum 7v when cart is loaded, then you can lower voltage due to higher torque motor or start at desired voltage un loaded and then add the cart).