ProClip has rolled out its new line of holders for the iPhone 4. The lineup includes both padded and adjustable models of its tilt-swivel holder, tilt-swivel holder with pass-though 30-pin connector, tilt-swivel charging holder with cigarette lighter adapter, and tilt-swivel charging holder with straight power cord for fixed installations. Notably, the padded models are designed to hold bare iPhone 4 units, while the adjustable models can accept iPhone 4 units covered in a variety of different silicone-type cases, though not Apple’s iPhone 4 Bumper case. Also, all the holders require a custom vehicle mount which is not included in the price. ProClip’s new line of holders is available for pre-order now with shipping expected to begin on July 16; pricing ranges from $35 to $80.